Assertion : For liquid dishwashing non-ionic type of detergent are used:
Reason : Remove greese and oil by micelle formation

Options

A. If both assertion and reason are true and reason is the correct explanation of assertion.
B. If both assertion and reason are true but reason is not the correct explanation of assertion.
C. If assertion is true but reason is false.
D. If both assertion and reason are false.

Answer

To solve the question, we will analyze the assertion and the reason step by step.

### Step 1: Understanding the Assertion
The assertion states that non-ionic detergents are used for liquid dishwashing.

- **Explanation**: Non-ionic detergents are preferred in dishwashing because they do not react with the ions present in hard water (like calcium and magnesium). This means they maintain their effectiveness even in hard water conditions, which is common in many households.

**Hint**: Consider why the type of detergent matters in relation to water quality.

### Step 2: Understanding the Reason
The reason given is that non-ionic detergents remove grease and oil by micelle formation.

- **Explanation**: Micelles are formed when detergent molecules surround grease and oil particles. The hydrophobic (water-repelling) tails of the detergent molecules attach to the grease, while the hydrophilic (water-attracting) heads face outward, allowing the grease to be washed away with water. This process is crucial for effective cleaning.

**Hint**: Think about how the structure of detergent molecules interacts with grease and oil.

### Step 3: Linking Assertion and Reason
Now we need to determine if the reason supports the assertion.

- **Analysis**: The assertion is correct because non-ionic detergents are indeed used for dishwashing. The reason is also correct as it accurately describes how these detergents work to remove grease and oil through micelle formation. Moreover, the reason provides a clear explanation for why non-ionic detergents are effective in this application.

**Hint**: Reflect on how the effectiveness of a detergent is influenced by its chemical properties.

### Conclusion
Both the assertion and the reason are correct, and the reason explains the assertion accurately. Therefore, the correct answer to the question is that both the assertion and reason are true, and the reason supports the assertion.

**Final Answer**: Both the assertion and reason are correct, and the reason explains the assertion.